.table {
    width: 100%;
    text-align: center;
    border: 2px solid gray;
    font-size: 24px;
    border-collapse: collapse;
    margin: 30px 0
}

.tr {
    border: 2px solid gray;
}

.th {
    border: 2px solid gray;
    font-size: 28px;
    background: darkturquoise;
}

.td {
    border: 2px solid gray;
    height: 80px;
}

.button {
    width: 140px;
    height: 40px;
    font-size: 20px;
    background: darkturquoise;
    color: white;
    border-radius: 20px;
    outline: none;
}

/*下面是添加页面样式*/

#id {
    width: 200px;
    height: 30px;
    border-radius: 20px;
    background: darkturquoise;
    color: white;
    outline: none;
}

table {
    margin: 100px 30%;
    width: 400px;
    font-size: 25px;
}

.add_th{
    font-size: 36px;
}

.name {
    width: 130px;
    height: 100px;
    text-align: right;
}

.name_input {
    width: 200px;
    height: 2em;
    font-size: 15px;
}

.select {
    height: 2.5em;
    width: auto;
    padding: 0 70px;
    font-size: 15px;
}

.option {
    text-align: center;
    font-size: 15px;

}

#id:hover {
    color: red
}